Combined punching and riveting machine.



Patented Aug. 27, I90I. F. KOSSL 8|. A. J. KRAFT.

COMBINED PUNCIHNG AND BIVETING MACHINE.

(Applichtion filed Apr. 11, 1901.

(No Model.)

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NITED STATES ATENT FFlfiE.

FRANK KOSSL AND ANDRE? J. KRAFT, OF MILWAUKEE, WVISCONSIN.

COMBINED PUNCHING AND RIVETING MACHINE.

EIPECIFICATION forming part Of Letters Patent No. 681 ,328 dated August27, 1901.

Application filed April 11, 1901. Serial No. 55,328. (No model.)

To aZZ whom it may concern.-

Be it known that we, FRANK KOsSL and ANDREW J. KRAFT, residing atMilwaukee, in the county of Milwaukee and State of Wisconsin, haveinvented a new and useful Improvement in a Combined Punching andRiveting Machine, of which the following is a description, referencebeing had to the accompanyingdrawings, which are a part of thisspecification.

Our invention has relation to an improved combined punching and rivetingmachine.

The primary object of the invention is to provide a form of constructioncapable of ac complishing in one and the same machine the punching andriveting in a simple and expeditious manner.

A further object is to provide an improved form of adjustment forregulating the throw of the lower movable jaw.

With the above and other incidental objects in view the inventionconsists of the devices and parts or their equivalents, as hereinafterset forth.

In the accompanying drawings, Figure l is a side elevation of ourimproved machine, parts being broken away and showing the pins employedfor the riveting operation fitted to the machine. Fig. 2 is a frontelevation. Fig. 3 is a fragmentary plan View of the lowerforwardly-extending arm. Fig. 4 is a detail View of the fly-wheel andallied mechanism, parts being broken away to clearly show the clutchmechanism, said clutch mechanism being shown in clutching engagementwith the belt-wheel; and Fig. 5 is a detail view showing the pins usedfor the punching operation.

Referring to the drawings, the numeral 6 indicates a base-plate, fromwhich extends upwardly a standard 7, said standard being provided at itsupper end with a forwardly-projecting arm 8 and below this arm andparallel therewith another forwardly-extending arm 9, the space betweenthe two arms forming a mouth 10.

Movably fitted to the forward end of the arm 8, preferably by a dovetailconnection, is an adjustable jaw 11. The rear side of this jaw, near theupper end thereof, is provided with an apertured lug 12, through which ascrew 13 passes, an unthreaded portion of the screw fitting in theaperture of the lug and said screw provided above the lug with anenlargement 14 to prevent vertical movement of the screw with respect tothe adjustable jaw. The screw engages a vertical threaded opening 15 inthe forward end of the arm 8, as clearly shown in Fig. 1. The lower endof the adjustable jaw 11 is adapted to carrya series of pins. The pinsshown in Figs. 1 and 2 and designated by the numeral 16 are the pinsemployed in the riveting operation. Said pins are solid and eachprovided upon its lower end with a small recess or concavity. Three ofthese riveting-pins are shown, the central pin being slightly in advanceforwardly of the two outer pins. Where it is desired that theseriveting-pins should be removable, as in case of the machine being used,as it is primarily intended, asacombinedpunching and riveting machine,they are removably held in place in the adj ustable jaw preferably bymeans of setscrews 17.

The lower forwardly-extending arm 9 is provided therethrough with aseries of openings 18, corresponding in number to the number of theupper and lower pins employed. In the present illustration of theinvention three of these holes are shown, said holes being in line withthe pins 16. Extending from the front edge of the arm 9 on the uppersurface ofsaid arm, longitudinally thereof, and across the two outeropenings 18 are recesses 19 19,

and exteudingtransversely of the upper sur-- face of said arm 9 andacross the central the number of upper pins employed and being also inline with said upper pins and in registration with the openings 18. InFigs. 1 and 2 of the drawings riveting-pins 23 are shown as extendingupwardly from this movable jaw and into theopenings 18. The upper end ofeach of these pins is concaved or recessed, the same as the lower end ofeach of the upper pins. Where the machine is v the collar.

used as a combined punching and riveting machine, the pins 23 areremovably held in the movable jaw, preferably by means of setscrews 24.

The numeral 25 indicates a bearing formed transversely of a medialportion of the standard 7. In this bearing is fitted revolubly a shaft26. This shaft near one end thereof has mounted fast thereon a collar27, (which of course could be an integral part of the shaft,) and thiscollar is provided with an annular groove 28. The groove 28 isintersected by a longitudinal spline-groove 29, which spline-grooveextends to the outer extremity of the collar,the rear portion of thegroove being of increased width, as most clearly shown in Fig. 4. In thespline-groove is fitted a feather 30. The rear end of this feather isformed with a head 31, and interposed between this head and a shoulder32, formed in the wall of the spline-groove and encircling the feather,is a coiled spring 33. The feather is furthermore provided with atransverse recess 34. Fitting loosely on the end of the shaft 26 is abelt-wheel 35. The inner side of the hub of this wheel is provided witha recess 36, which when brought into registration with the outer end ofthe spline-groove is adapted to be engaged by the head 31 of the feather30.

Beneath the collar 27 is a box 37. In this box is fitted a rod or stem38. The upper end of this rod is enlarged, and the extremity of theenlarged portion is formed with a yoke 39, which engages the annulargroove 28 of The inner edge of this yoke is beveled, as indicated by thenumeral 40, and this beveled edge engages the recess 34 of the feather,and thereby normally holds the feather inwardly against the action ofthe spring 33, so that the head 31 of the feather cannot engage therecess 36 of the hub of the belt-wheel. Any desirable means for drawingthe rod or stem 38 downwardly, so as to bring the yoke 39 out ofengagement with the feather, may be adopted; but we prefer to employ themechanism shown in the accompanying drawings, and which consists in afootlever 41, pivoted at one end and having connected to a medialpointthereof a rope or cable 42. This rope is extended upwardly over apulley43,mounted loosely on an axis extending laterally from the bearing25, and thence downwardly and beneath another pulley 44, the end of therope being finally secured to one end of a lever 45. The other end ofthis lever is jointed to the lower end of a link 46, the upper end ofsaid link being pivoted to the frame. The lower end of the rod 38 isextended through the bottom of the box 37, and

the extremity of said lower end is pivotally connected to a medial pointof the lever 45.

The rod or stem 38 is encircled within the box It will be evident thatwhen the parts are in position shownin Figs. 1 and 2 the driving-belt,(not shown,) which passes around the wheel 35, will not impart rotationto the shaft 26. If, however, the foot-treadle 41 is depressed, a pullis exerted on the rope or cable 42, and this pull will cause a turningof the lever 45 and a consequent down movement of the rod 38 sufficientto release the yoke of said rod from engagement with the recess 34 ofthe feather against the contrary force exerted by the spring 47, and themoment this release occurs the spring 33 acts expansively on the feather30, and when the wheel 35 is rotated sufficiently to bring the recess 36thereof into registration with the spline-groove 29 the head 31 of saidfeather will be forced into engagement with said recess of the wheel, asshown in Fig. 4, and consequently the rotation of said wheel will beimparted to the shaft. When it is desired to unclutch the wheel from theshaft, all that is necessary to be done is to remove footpressure on thetreadle, and the spring 47 will then force the yoke 39 upwardly, thebeveled edge 40 of said yoke engaging the wall of the recess 34 of thefeather, and thereby moving said feather against the action of thespring 33 inwardly sufficiently far to release the head 31 of thefeather from engagement with the recess 36.

The lower movable jaw 21 is moved upwardly by means of the rotation ofthe shaft 26, and any desirable connection may be employed between saidshaft and the movable jaw for accomplishing this purpose. We prefer touse the mechanism illustrated in the accompanying drawings, and whichmechanism will now be described. The shaft 26 is provided on the endthereof opposite to the end on which the wheel 35 is mounted with aneccentric 48. Surrounding this eccentric is an eccentric-strap 49,advisably split at the lower portion thereof, the split ends provided iwith dependinglugs, which are held together by means of a short-headedbolt 50, the unheaded end of said bolt being threaded to receive a nut51. By turning this nut the proper fit of the eccentric-strap to theeccentric may be readily regulated. Pivoted medially on a transversepivot 52 and between cars 53, depending from the under side of the lowerarm 9, is a lever 54. The outer end of this lever extends beneath thelower movable jaw 21, and the inner end of said lever is suitablyconnected to the eccentric-strap. The connection shown in theaccompanying drawings consists of a link 55, pivotally connected to theinner end of the lever. The lower end of this link is in the form of ayoke, and the arms of the yoke receive therebetween the upper end of anarm 56, extending upwardly from the eccentric-strap, the said arm beingpivotally connected by means of a transverse pivot-bolt extendingthrough the yoke and through said arm. This arm 56 maybe an integralpart of the strap; but we prefer to make it separate therefrom andthread the lower end thereof, said threaded lower end fitting in athreaded socket in the upper portion of the eccentric-strap, as clearlyshown in Fig. 1. By this means the throw of the lever 54; maybe readilyregulated merely by taking out the pivot-bolt of said arm and screwingthe arm either upwardly or downwardly in the socket, in accordance withthe particular adjustment desired. To prevent the eccentric-strap fromworking off the end of the shaft 26, we form the outer end of theeccentric with an enlargement or head 57, which forms a shoulder orabutment, against which the eccentric-strap bears.

It is desirable that suitable brake mechanism should be employed for theshaft 26, and We therefore show a box 58, in which a brakeblock 59 isadjustably held by means of a setscrew 60.

In Fig. 5 of the drawings we show the pins which are employed in theoperation of punching. The numeral 61 indicates one of the upper pinsand 62 one of the lower pins. Both these pins are held in place,respectively, in the upper adjustable jaw 11 and the lower movable jaw21 by means of the set-screws shown in Figs. 1 and 2. The upper portionof the upper pin, which fits in a socket of the adjustable jaw 11, isenlarged,while the lower portion consists of a reduced solid pin. Thelower pin 62, as clearly shown in Fig. 5, is tubular throughout.

Our invention is particularly adapted, although not necessarily, forpunching and riveting plates used in the construction of steel ranges.The first operation to be performed is that of punching the holesthrough the plate. The pins 61 and 62 are properly adjusted to therespective jaws 11 and 21.

The plate to be punched is then inserted into the mouth 10 and thehandle 63 operated so as to turn the screw 13 downwardly until the lowerends of the pins 61 are just above the plate to be punched. Thefoot-treadle 41 is then depressed, and this will cause the beltwheel 35to be clutched to the shaft 26 in the manner hereinbefore fully pointedout. As the shaft is rotated the eccentric 48 thereof causes a turning,through the medium of the connection described, of thelever 54. When theouter end of this lever is forced upwardly, the movable jaw 21 isnecessarily forced in the same direction, and the pins 62 bring theplates to be punched into forcible contact with the lower ends of thepins 61, and said pins are thereby driven through the plate. By reasonof the fact that the lower pins 62 are tubular the small pieces of metalthereby punched out of the plate are free to pass through these tubular-pins. It will be evident that the plate to be punched may be passedinto the mouth either from the front end thereof or from either side.This completes the punching operation, and the punching-pins are thenremoved and the pins 16 and 23 adjusted to the respective jaws 11 and21. Rivets are now passed through the two outer holes which werepunched, the heads of the rivets being uppermost. The plate, with therivets, is then passed into the mouth .10 and the heads of the rivetsfitted in the recesses in the lower ends of the pins 16. By reason ofthe provision of the longitudinal recesses 19 19 in the arm 9, whichrecesses receive the lower ends of the rivets, there is no impediment tothe free insertion of the plate between the jaws, as the lower ends ofsaid rivets are received in the grooves. The same operation as beforedescribed is now repeated-that is to say, the foot-treadle 41 isdepressed. This will cause an up movement of the movable jaw 21, and theupper recessed ends of the two outer pins 23 will thereby be broughtinto engagement with the lower ends of the rivets and said lower ends ofthe rivets will be upset. Pressure on the foot-treadle is now removedand the plate withdrawn from the mouth 10 and a rivet inserted in thecentral opening of said plate. The plate is now inserted into the mouth10 from the side thereof and the lower end of the rivet is received inthe transverse groove 20. The foot-treadle 4:1 is again depressed andthe lower end of this central rivet there-' by upset.

While we prefer to employ our machine as a combined punching andriveting machine, yet we do not desire to be understood as limitingourselves thereto, inasmuch as it is obvious that the machine may beemployed solely as a punching-machine or solely as a riveting-machine.In the first instance the punching-pins 61 and 62 would be permanentlyfixed in the jaws and in the latter instance the riveting-pins 16 and 23would be permanently fixed in the jaws.

hat we claim as our invention is 1. The combination of a standard havingparallel arms projecting therefrom with a space therebetween to form amouth, one of said arms provided with a series of holes therethrough, anadjustable jaw fitted to one of said arms, a movable jaw fitted to theother of said arms, and means for removably fitting different forms ofpins to the respective jaws, the pins of one set being in alinement withthe pins of the other set, and one set of pins adapted to be forcedthrough the openings formed in one of the arms.

2. The combination of a standard having parallel arms projectingtherefrom with a space therebetween to form a mouth, one of said armsprovided with a series of holes there-through, the outer holes being outof line with the inner hole, an adjustable jaw fitted to one of saidarms, a movable jaw fitted to the other of said arms, and pins carriedby the respective jaws, the pins of one set being in alinement with thepins of the other set; and one set of the pins adapted to be forcedthrough the openings formed in one of the arms.

3. The combination of a standard having IIO parallel arms projectingtherefrom with a space therebetween to form a month, one of said armsprovided with a hole and with a recess intersecting said hole, anadjustable jaw fitted to one of said arms, a movable jaw fitted to theother of said arms, and pins carried by the respective jaws, the pins ofone set being in alinement with the pins of the other set,and one set ofpins adapted to be forced through the openings formed in one of thearms.

45. The combination of a standard having parallel arms projectingtherefrom with a space therebetween to form a month, one of said armsprovided with holes and with recesses intersecting said holes, anadjustable jaw fitted to one of said arms, a movable jaw fitted to theother of said arms, and pins carried by the respective jaws, the pins ofone set being in alinement with the pins of the other set, and one setof the pins adapted to be forced through the openings formed in one ofthe arms.

5. The combination of a standard having parallel arms projectingtherefrom with a space therebetween to form a month, one of said armsprovided with a series of holes therethrough, the outer holes being outof line with the inner hole, and said arm also provided with recessesintersecting the outer holes, and with a recess intersecting the innerhole, an adjustable jaw fitted to one of said arms, a movable jaw fittedto the other of said arms, and pins carried by the respective jaws, thepins of one set being in alinement with the pins of the other set, andone set of pins adapted to be forced through the openings formed in oneof the arms.

6. The combination of a standard having parallel arms projectingtherefrom with a space therebetween to form a month, one of said armsprovided with a series of holes therethrough, an adjustable jaw fittedto one of the arms, a spring-pressed movable jaw fitted to the other ofsaid arms, a lever adapted to act against the movable jaw, means foroperating the lever, and pins carried by the respective jaws, the pinsof one set being in alinement with the pins of the other set, and oneset of the pins adapted to be forced through the openings formed in oneof the arms.

7. The combination of a standard having parallel arms projectingtherefrom with a space therebetween to form a month, one of said armsprovided with a series of holes therethrough, an adjustable jaw fittedto one of the arms, a movable jaw fitted to one of the arms, a leverengaging the movable jaw, a rotatable shaft, an eccentric carried bysaid shaft, an eccentric-strap surrounding the eccentric, a connectionbetween the eccentrictherethrough, an adjustable jaw fitted to oneof thearms, a movable jaw fitted to the other of said arms, a lever engagingthe movable jaw, a rotatable shaft, an eccentric carried by said shaft,an eccentric-strap surrounding the eccentric, an arm extending from theeccentric-strap, a link pivotally connected at one end to the arm and atits other end to the lever, and pins carried by the respective jaws,

the pins of one set being in alinement with the pins of the other set,and one set of the pins adapted to be forced through the openings formedin one of the arms.

9. The combination of a standard having parallel arms projectingtherefrom with a space therebetween to form a month, one of said armsprovided with a series of holes therethrough, an adjustable jaw fittedto one of said arms, a movable jaw fitted to the other of said arms, alever engaging the movable jaw, means for operating the lever, means foradjusting the throw of said lever, and pins carried by the respectivejaws, the pins of one set being in alinement with the pins of the otherset, and one set of the pins adapted to be forced through the openingsformed in one of the arms;

10. The combination of a standard having parallel arms projectingtherefrom with a space therebetween to form a month, one of said armsprovided with a series of holes therethrough, an adjustable jaw fittedto one of the arms, a movable jaw fitted to the other of said arms, alever engaging the movable jaw, a rotatable shaft, an eccentric carriedby said shaft, an eccentric-strap surrounding the eccentric, an armadjustably connected to the eccentric-strap, a link pivotally connectedat one end to the arm and at its other end to the lever,and pins carriedby the respective jaws, the pins of one set being in alinement with thepins of the other set, and one set of the pins adapted to be forcedthrough the openings formed in one of the arms.

In testimony whereof we affix our signatures in presence of twowitnesses.

FRANK KOSSL.

ANDREW J. KRAFT.

Witnesses:

A. L. MORSELL, ANNA V. FAUs'r.

IIO

